The open trail half windshield is made with ultra durable 0.177" makrolon® polycarbonate for long lasting, high strength protection and a clear view of the trail.This half windshield is 11" tall.The windshield has a seal at the bottom that rests against your vehicle.It is attached to your roll bars using four galvanized steel, rubber coated p clamps that are bolted to the windshield through pre-drilled holes.